1.쉬움
Which state of matter has a fixed volume but takes the shape of its container?
- ALiquid
- BPlasma
- CSolid
- DGas
2.쉬움
What is the normal pH range of human arterial blood?
- A6.35 to 6.45
- B7.85 to 7.95
- C7.00 to 7.10
- D7.35 to 7.45
3.쉬움
What is plasma, as a state of matter?
- AA very hot gas in which atoms have lost electrons and become ions
- BA liquid that has been cooled below its freezing point
- CA solid that conducts electricity
- DThe liquid part of blood
4.보통
How does evaporation differ from boiling?
- AEvaporation needs a higher temperature than boiling
- BEvaporation happens throughout the liquid at a set temperature; boiling happens only at the surface
- CEvaporation happens only at the surface and at any temperature; boiling happens throughout the liquid at a set temperature
- DEvaporation produces a solid, while boiling produces a gas
5.보통
Oxygen has 8 electrons. What is its electron configuration?
- A1s² 2s² 2p⁴
- B1s² 2s⁶
- C1s² 2s² 2p⁶
- D1s² 2p⁶
6.보통
Al³⁺과 O²⁻ 이온으로 이루어진 산화 알루미늄의 화학식은 무엇인가요?
- AAlO₃
- BAlO
- CAl₂O₃
- DAl₃O₂
7.어려움
Orange bromine water is shaken with two hydrocarbons. With hexene it turns colourless; with hexane it stays orange. What does this show?
- AHexene is an alcohol and hexane is an acid
- BHexene contains a C=C double bond; hexane does not
- CHexane contains a C=C double bond; hexene does not
- DBoth contain double bonds, but hexane reacts more slowly
8.어려움
반응 CuO + H₂ → Cu + H₂O에서 환원되는 물질은 무엇인가요?
- A수소, 산소를 얻기 때문이다
- B물, 생성되기 때문이다
- C산화 구리, 구리가 전자를 얻기 때문이다
- D구리, 전자를 잃기 때문이다
정답표
- 1. A · Liquid
- 2. D · 7.35 to 7.45
- 3. A · A very hot gas in which atoms have lost electrons and become ions
- 4. C · Evaporation happens only at the surface and at any temperature; boiling happens throughout the liquid at a set temperature
- 5. A · 1s² 2s² 2p⁴
- 6. C · Al₂O₃
- 7. B · Hexene contains a C=C double bond; hexane does not
- 8. C · 산화 구리, 구리가 전자를 얻기 때문이다
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